//
//  OAuthViewController.swift
//  sinaweibo
//
//  Created by mac on 15/11/13.
//  Copyright © 2015年 mac. All rights reserved.
//

import UIKit
import SVProgressHUD
import AFNetworking
class OAuthViewController: UIViewController {

    let webView = UIWebView()
    
   
    
    @objc private func close() {
        dismissViewControllerAnimated(true, completion: nil)
    }
    @objc private func fullAccount() {
        let jsString = "document.getElementById('userId').value = 'leiggee@126.com' , document.getElementById('passwd').value = 'oyonomg';"
        webView.stringByEvaluatingJavaScriptFromString(jsString)
    }

    
    override func loadView() {
        view = webView
        webView.delegate = self
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        setupUI()
        loadOauthPage()
    }
    
    //加载网页
    private func loadOauthPage() {
        let urlString = "https://api.weibo.com/oauth2/authorize?" + "client_id=" + client_id + "&redirect_uri=" + redirect_uri
        let url = NSURL(string: urlString)
        let request = NSURLRequest(URL: url!)
        webView.loadRequest(request)
    }
    
    private func setupUI() {
    
        self.navigationItem.leftBarButtonItem = UIBarButtonItem(title: "关闭", style: .Plain, target: self, action: "close")
        
    }
}

    extension OAuthViewController:UIWebViewDelegate {
        func webViewDidStartLoad(webView: UIWebView) {
            SVProgressHUD.show()
        }
        
        func webViewDidFinishLoad(webView: UIWebView) {
            SVProgressHUD.dismiss()
        }
        
        //协议方法 如果返回 bool  一般表示 如果为true  表示当前对象可以正常 工作  否则就不能
        func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {
            
            
            guard let urlString = request.URL?.absoluteString else {
                return false
            }
            
            //是网页请求页面 或者请求授权页面
            if urlString.hasPrefix("https://api.weibo.com") {
                return true
            }
            
            if !urlString.hasPrefix(redirect_uri) {
                return false
            }
            
            //程序走到这里  一定包含了  回调的url
            guard let query = request.URL?.query else {
                return false
            }
            
            let codeStr = "code="
            let code = query.substringFromIndex(codeStr.endIndex)
            print(query)
            print(code)
            
            UserAccountViewModel().loadAccessToken(code) { (error) -> () in
                print("come here")
                if error != nil {
                    SVProgressHUD.showInfoWithStatus("网络君正在睡觉,请稍后再来")
                    return
                }
                self.dismissViewControllerAnimated(true, completion: nil)
            }
            
            return false
            
        }
        
       
    }
    

    
